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[Prenatal diagnosis and genetic analysis of three fetuses with paternal chromosomal simplex 3q microduplication
Laiping Zheng1, Congmian Ren, Fangmei Xu
1Medical Genetic Center, Guangdong Women and Children's Hospital, Guangzhou, Guangdong 511442, China. yq3375@163.com.
Objective:
To explore the phenotypic characteristics of paternal chromosomal simplex 3q microduplication syndrome.
Methods:
Amniotic fluid samples of 3 fetuses from a same couple were subjected to prenatal diagnosis through combined high-resolution chromosomal G-banding karyotyping and chromosomal microarray analysis (CMA). Peripheral blood samples were also collected the couple for the determination of parental origin.
Results:
The karyotypes of all three fetuses were 46,XN,dup(3)(q25q26.1), and their CMA results were arr[hg19]3q25.33q26.1(159 336 333-166 924 969)×3. The duplication in the three fetuses have all derived from their father. No anomaly with found with the mother by CMA .
Conclusion:
Through combined G-banded chromosomal karyotyping and CMA assay, a paternally derived 3q25.33-q26.1 microduplication has been identified, which has enabled genetic counseling for this couple.
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